package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        List<Category> categorylist = categoryMapper.pageQuery(categoryPageQueryDTO);
        Page<Category> p= (Page<Category>) categorylist;
        return new PageResult(p.getTotal(),p.getResult());
    }

    @Override
    public void setStatus(Integer status, Long id) {
        Category category = Category.builder()
                .status(status)
                .id(id)
                .build();
        categoryMapper.update(category);
    }

    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

        category.setStatus(StatusConstant.ENABLE);

        categoryMapper.insert(category);
    }

    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

        categoryMapper.update(category);
    }

    @Override
    public void delete(Long id) {
        List<Setmeal> relatedSetmeal = setmealMapper.getByCategoryId(id);
        if (relatedSetmeal.size()!= 0) {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        List<Dish> relatedDish = dishMapper.getByCategoryId(id);
        if (relatedDish.size()!=0) {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        categoryMapper.delete(id);
    }

    @Override
    public List<Category> list(Integer type) {

        return categoryMapper.list(type);

    }

}
